CV-2x3-146

Consistent export of shells by having each vertex defined only once and shared by edges 

Based on          IFC2x3

Initiator            ISG Meeting-Prague

Effects              Extended Coordination View

Date                    2008 02 26

Description:

For each IfcClosedShell and IfcOpenShell, used e.g. in IfcFacetedBrep, or in IfcShellBasedSurfaceModel, each vertex shall only be exported once. Edges shall share identical vertices.


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